Machine for making welts.



J. E. LUCAS.

- MACHINE FOR MAKING WELTS.

APPLICATlON FILED Nov. 24. 191 1.

1,278,956. Patented Sept. 17,1918.

dlllllllllllllllllllllllI|llllIIIIlllllllllllllllllllllll Illll IIIIHII has NTE STATES PATENT OFFICE.

JCH'N E. LUCAS, OF BROCKTON', MASSACHUSETTS, ASSIGNOR TO FREDERICK R. I

WOODWARD, NEWTON, MASSACHUSETTS.

MACHINE FOR MAKING WELTS.

Specification of Letters Patent. Patented Sept. 17, 1918.

Application filed November 24, 1917. Serial No. 204,127.

To all whom z'tmay concern; V

Be it known that I, Joan E. Lucas, a citizen of the United States of America, and a resident of Brockton, in the county of Plymouth. and Commonwealth of Massachusetts, have invented certain new and useful Improvements in. Machines for Making Welts, of which the following is a specificat1on. 1 y

This invention relates to Welt machines and has for its object the production of a machine of this character in which welts may be formed from plastic sheets of. material and be reinforced simultaneously with strip'sof woven material.

. The-inventionconsists in two revoluble rolls coactin'g with each other and provided with peripheral depressions and projections cooperating to cutfrom' a sheet of material astrip and form therein astitch receiving groove, the usual bevel edge and a plurality of lateral indentations to give a finishedap- .pearance to said welt when in the completed shoe.

The invention further consists in certain novel features of construction and arrangement of parts' which will be fully understood by reference to the description of the drawings and to the claims hereinafter given.

For the purposeof illustrating the invention one preferred form thereof isillustrated in the drawings, this form having been. found to give satisfactory and reliable results, although -it is to be understood that the various instrumentalities of which the I invention consists can be variously arranged and organized and that the invention is not limited to the precise arrangement and organization,- of these instrumentalities V as herein shown and described, except as re quired by the scope of the appended claims. 7 Of the drawings Figure 1 represents an elevation of a machine embodying the principles of the present inventiomaportion thereof being shown in section. Y. i

j Fig. 2 represents an endtview of the same, a portion of the lower roll belng shown in section. V

3 representsa plan of a welt formed on "said machine. v

Fig. 4: represents an inverted plan of the welt formed without the strip of reinforcing material. 1 i I Similar characters designate like parts throughout the several figures of the drawmgs.

In the drawings, 10 is a frame having a shaft 11 revolubly mounted in bearings therein. Oneend of the shaft 11 has secured thereto'the fast and loose pulleys 12 and 13 and intermediate the loosepulley 13 and the frame 10 is a gear le meshing with a gear 15 secured to a revoluble shaft 16 mounted in hearings in blocks 17 and 18. The blocks 17 and 18 are adapted to be moved vertically in slots 19 in the frame 10.

The revoluble shaft 11 has secured thereto a roll 20 coacting with a roll 21 secured to and revoluble' with the shaft 16. When power is applied to the fast pulley 12 the shafts 11 and 16 are rotated simultaneously. The roll 21 is adapted to be moved toward the roll 20 by means of the adjusting member 22 threaded to the frame 10.

The roll 20 is provided with peripheral flanges 23 and 24 between which is positioned a portion of the roll 21:, the outer face of said roll 21 hearing against the inner faces of the flanges 23 and 24. V

Adjacent to the flange 24- is an outwardly inclined peripheral portion 25 and intermediate this inclined portion 25 and the flange 20 is a row of lateral projections 26. The roll 21 is provided with a continuous annular head 27 which is. in a plane intermediate the inclined portion 25 and the row of lateral projections 26. V r

Secured to the frame 10 is a guide member 27 X through which a strip of woven material 28 is fed to the roll 21. When the machine is in operation a sheet of semi-plastic material 29, such as rubber, is placed upon the roll 20 with its edge abutting the inner face of the flange 24.

As the sheet of material isfed between the rolls 202l a strip 32 will be out therefrom by the sharp corners 30 and 31 ofthe rolls 21 and 20. As this strip is fed between the rolls 20 and 21 a row of indentations 33 will be pressed into the under side of the strip anda beveled portion Siformed near one edge thereof, as shown in Figs. 4 to 6 inclusive. e

As the strip 32 is fed between the rolls 20 and 21 the head 27 will form a stitch receiving groove in the upper face of saidlstrip. If desired, the strip may be formed wholly ofsemi-plastic material as Shown in section inFig. 6 of the drawings, but preferably during the formation of the strip the strip of woven material 28 is fed around the roll 21 and pressed into the u per surface of the strip 32, as shown in Figs. 1, 2, 3, and 5.

As thestrip 32 is delivered from the niachine, it may be vulcanized or otherwise treated so as to prepare it for commercial use. "Obviously'any coloring matter may be used in the plastic material as it is cut into the strip to adapt it for use inthe manufactureof shoes of different colors. v

The machine is particularly adapted for use in manufacturing the rubber welts for shoes for which Letters Patent No. 1,173,287 were issued to meFebruary 29,1916. Any desired pressure upon'the strip may be secured by adjusting the threaded member 22 bearing upon the block 18.

By means of this construction welts 'may be formed without the use 'ofskiving'knives or other cutting 'instruments for forming stitch receiving grooves.

By means of this, machine cluring; the manufacture of the strip the row 'of indentations 33 maybe simultaneously 'formed, thus dispensing with the necessity of forming these indentations'after the shoe is 'manufactured, as is now the usual practice.

Heretofore in themani'ifacture of welts from pieces of leather the various pieces are la pped and cemented together and then skived to give an" even thickness thereto.

- They are then rolled and subsequently cut into strips of the desired width. Then these strips are'grooved and beveled.

There are five different operations to make a welt while 'in-theipresent machine the welt is completed in one operation on a single machine. I

a The strips formed on applicants machine are made in long lengths of from to feet in length, making-"it possible to cut them up into shorter lengths, each of which shorter lengths is integral andhas no lapped portion. v 1

In the leather welts there is liable tolbe considerable waste" if the lapped portions are cutiout andjif' not cut out theyoften become separated on account =01 the imper feet cementing.

These objections iarewholly overcome by the manufacture of thewelts from plastic material on a 'machine as h'erein described.

It is believed that the operation and many advantages of this invention will be fully understood from the foregoing description.

Ilaving thus described my invention, I claim:

1. In a device of the class described, the combination of two revoluble rolls, one of which has an annular depression to receive a portion of thezperiphery of the other roll, the opposite ends of which contact with the side walls of said depression, and one of which is provided on its periphery'with a continuous bead.

2. In a device of the class described, the combination of two="revoluble rolls, onefof which'has an annular depressionto receive a portion of the periphery of the other roll, the outer end of whichcontacts'yvith a side wall of said depression, thereby in the rotation of said rolls producing a shearing" 35 action on the material fed thereto,and one of which is provided on-its peripherywith a row of unbroken lateral projections parallel with the axis of said roll; 7

3. Ina device of th'e' class desc'iibed, the combination of* two revoluble ro'lls,"- one; of which has airannulai" depres'sion to receive a portion of the periphery of theother roll, the opposite ends of which'contact' with" the side walls of said"depression, and one of which is provided on its per'iphery with a continuous row of lateral projections and a parallel outwardly inclined portion.

at. Ina device ofthe"class' describedfi'the combination of a ,revo'luble rollhaving pe-J ripheral flanges-and a'row of -la'teralprojections intermediate" said flang'e's andanother roll adapted to revolve with a portion of 1 its periphery 'between 1 said flangesand having a continuous peripheral bead near one edge thereof equidistant' throughout its length from the 'eridso'f said roll. V

5. In a device of the class' describedfthe combination of a revoluble roll having peripheral flanges and af'r'ow of-unbroken lateral projections intermediate'said flanges parallel with the'axis or an-r011; and another roll adaptedtdrevolve *with a' portion of its periphery between saidflanges and having' a continuous p' eripheral" bead"near one edge thereof and ouster-1cmsaid' row of projections. i e i i 6. In a device of the class 'describedfthe combination of a re'voluble roll having" 'peripheral flanges and a row"of lateralfprojections intermediate saidflangesand a continuous peripheral portion iinclined outwa'rdly toward one of said flanges; andanother roll adapted to revolve with a-portion of its periphery betweensaid flanges'iand having a continuous peripheral beadnear one edge-thereof.

a 7. In a device of the class describedf the combination of a 'revoluble rtill having peripheral flanges and a rowof -lateral"pro jections intermediate said flanges'and a continuous peripheral portion lnclined outwardly toward one of said flanges; and another roll adapted to revolve with a portion of its periphery between said flanges and having a continuous peripheral bead near one edge thereof in a plane intermediate said row of projections and said inclined portion. 7

8. In a device of the class described, the combination of a revoluble roll having peripheral flanges and a row of lateral projections intermediate said flanges and a continuous peripheral portion inclined outwardly toward one of said flanges; another roll adapted to revolve with a portion of its periphery between said flanges and having a continuous peripheral bead near one edge thereof; and means for varyingthe space between the peripheries of said rolls.

In a device of the class described, the combination of a revoluble roll having eripheral flanges and a row of lateral projections intermediate said flanges; another roll adapted to revolve with a portion of its periphery between said flanges and having a continuous peripheral bead near one edge thereof; and means for guiding a strip of reinforcing material to and beneath the upper roll, said strip being of considerably less thickness than the depth of the space between said rolls.

10. In a device of the class described, the combination of a revoluble roll havin peripheral flanges and a row of latera unbroken projections intermediate said flanges, said projections being parallel to the axis of said roll 5 another roll adapted torevolve with a portion of its periphery between said flanges and having a continuous peripheral bead near one edge thereof; and means for rotating said rolls simultaneously.

Signed by me at 4 Post Oflice Sq., Mass, this 28th day of June, 1917.

JOHN E. LUCAS.

Boston,

Witnesses:

WALTER E. LOMBARD, NATHAN C. LOMBARD.

Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents,

Washington, I). 0. 

